TURNTABLE ADJUSTMENT BUCKLE

Description

BACKGROUND

1. Technical Field

The present disclosure relates to a buckle, and more particularly, to a turntable adjustment buckle.

2. Description of Related Art

An existing rope buckle often uses a dislocation structure to limit the rope. Such dislocation structure not only easily wears the rope, but also cannot store the rope. In addition, the existing rope buckle requires one hand to press the dislocation structure and one hand to pull the rope in order to adjust the rope, which is inconvenient to use.

SUMMARY

The present disclosure provides a turntable adjustment buckle, which comprises: a first buckle element including an accommodating space and a first matching portion; and a second buckle element including a column and a second matching portion, wherein the column is located in the accommodating space and is for a rope to be wound around, the second matching portion is disposed on the column and located in the accommodating space, and the second matching portion is assembled with the first matching portion, wherein the second buckle element is able to rotate relative to the first buckle element, so that the rope is able to be wound around the column in a fastening direction or loosened from the column in a releasing direction, and an engagement strength between the first matching portion and the second matching portion is different according to the fastening direction and the releasing direction.

In the aforementioned turntable adjustment buckle, the engagement strength in the fastening direction is smaller than the engagement strength in the releasing direction.

In the aforementioned turntable adjustment buckle, the first matching portion has at least one tooth portion, the second matching portion has a plurality of positioning grooves, and the tooth portions are accommodated in the plurality of positioning grooves.

In the aforementioned turntable adjustment buckle, the second matching portion further has a turntable body, and the plurality of positioning grooves are recessed from the turntable body and are arranged in a ring or radial shape at intervals from each other.

In the aforementioned turntable adjustment buckle, the first buckle element further includes a base and an annular wall, the annular wall extends outward from the base, the first matching portion is disposed in the annular wall, the accommodating space is surrounded and defined by the annular wall and the first matching portion, the second buckle element further includes an operating portion, the operating portion is disposed on the annular wall, and the column extends outward from the operating portion.

In the aforementioned turntable adjustment buckle, the first buckle element further includes two first through holes, the second buckle element further includes a second through hole, the first through holes are formed through the annular wall and correspond to each other, and the second through hole is formed through the column, wherein the first through holes and the second through hole are used for the rope to pass through.

In the aforementioned turntable adjustment buckle, the first matching portion further has a connecting portion and at least one elastic portion, the connecting portion is H-shaped and is disposed inside the annular wall, the elastic portion is connected to the connecting portion, and the tooth portions are disposed on the elastic portion.

In the aforementioned turntable adjustment buckle, the base is made of nylon, the annular wall and the first matching portion are made of polyoxymethylene, and the second buckle element is made of nylon.

In the aforementioned turntable adjustment buckle, the first matching portion further has a connecting portion and at least one elastic portion, the connecting portion is disposed inside the annular wall, the elastic portion is connected to the connecting portion and is in a cross shape together with the connecting portion, and the tooth portions are disposed on the elastic portion.

In the aforementioned turntable adjustment buckle, the base and the annular wall are made of nylon, the first matching portion is made of polyoxymethylene, and the second buckle element is made of nylon.

In the aforementioned turntable adjustment buckle, each of the tooth portions has an inclined surface and a stopping surface adjacent to each other, and an area of the inclined surface is larger than an area of the stopping surface.

In the aforementioned turntable adjustment buckle, each of the plurality of positioning grooves has a pushing surface and a limiting surface opposite to each other, the pushing surface corresponds to the inclined surface, and the limiting surface corresponds to the stopping surface and engages with the stopping surface.

In the aforementioned turntable adjustment buckle, the pushing surface slides on the inclined surface and is offset with the inclined surface when the second buckle element rotates relative to the first buckle element so that the rope is wound around the column along the fastening direction, and the limiting surface and the stopping surface are offset with each other when the second buckle element rotates relative to the first buckle element to cause the rope to be loosened from the column along the releasing direction.

In the aforementioned turntable adjustment buckle, the first matching portion has a plurality of positioning grooves, the second matching portion has at least one claw, and the claw is accommodated in one of the plurality of positioning grooves.

In the aforementioned turntable adjustment buckle, the claw is composed of a base end extending outward from the column, a bending body bent in a circumferential direction, and a buckle body disposed on the bending body and facing the plurality of positioning grooves.

In the aforementioned turntable adjustment buckle, the first buckle element further includes a base, an annular wall and a first limiting portion, the annular wall extends outward from the base, the plurality of positioning grooves are arranged on the annular wall, the accommodating space is surrounded and defined by the base and the annular wall, the first limiting portion extends outward from the annular wall, the second buckle element further includes an operating portion and a second limiting portion, the operating portion is disposed on a top edge of the annular wall and connected to the column, and the second limiting portion is disposed on the operating portion and snapped into the first limiting portion.

In the aforementioned turntable adjustment buckle, the first buckle element further includes two first through holes, the second buckle element further includes a second through hole, the first through holes are formed through the annular wall and correspond to each other, the second through hole is formed through the column, wherein the first through holes and the second through hole are used for the rope to pass through.

In the aforementioned turntable adjustment buckle, the column has a shaft portion, the base has a shaft hole, and the shaft portion is accommodated in the shaft hole, so that the second buckle element is able to rotate relative to the first buckle element with the shaft portion as an axis.

In the aforementioned turntable adjustment buckle, the operating portion is made of nylon, the second matching portion and the column are made of polyoxymethylene, and the first buckle element is made of nylon.

In the aforementioned turntable adjustment buckle, the buckle body has an inclined surface and a stopping surface adjacent to each other, and an area of the inclined surface is larger than an area of the stopping surface.

In the aforementioned turntable adjustment buckle, each of the plurality of positioning grooves has a pushing surface and a limiting surface adjacent to each other, an area of the pushing surface is larger than an area of the limiting surface, the pushing surface is correspondingly engaged with the inclined surface, and the limiting surface is correspondingly engaged with the stopping surface.

In the aforementioned turntable adjustment buckle, when the second buckle element rotates relative to the first buckle element so that the rope is wound around the column along the fastening direction, the pushing surface slides on the inclined surface and is offset with the inclined surface, the bending body is elastically compressed toward the column, and the bending body does not rebound until the buckle body slides into the next adjacent positioning groove via the inclined surface and the pushing surface.

In the aforementioned turntable adjustment buckle, when the second buckle element rotates relative to the first buckle element to release the rope from the column along the releasing direction, the limiting surface slides on the stopping surface and is offset with the stopping surface, the bending body is elastically compressed toward the column, and the bending body does not rebound until the buckle body slides into the next adjacent positioning groove via the limiting surface and the stopping surface.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an overall schematic view of a turntable adjustment buckle according to a first embodiment of the present disclosure.

FIG. 2 is an exploded schematic view of the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 3 is a top view of a first buckle element in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 4 is a schematic view showing a different viewing angle of the first buckle element in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 5 is a schematic view showing a different viewing angle of a second buckle element in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 6 is a side view of the second buckle element in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 7 and FIG. 8 are schematic cross-sectional views showing different viewing angles of the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 9 is a schematic cross-sectional view of a tooth portion and a positioning groove in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 10 is an overall schematic view of a different implementation aspect of the first buckle element in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 11 is a bottom view of the first buckle element of FIG. 10.

FIG. 12 is an overall schematic view of a different implementation aspect of the first buckle element in the turntable adjustment buckle according to the first embodiment of the present disclosure.

FIG. 13 is a top view of the first buckle element of FIG. 12.

FIG. 14 is an overall schematic view of a turntable adjustment buckle according to a second embodiment of the present disclosure.

FIG. 15 is an exploded schematic view of the turntable adjustment buckle according to the second embodiment of the present disclosure.

FIG. 16 is a top view of a first buckle element in the turntable adjustment buckle according to the second embodiment of the present disclosure.

FIG. 17 is a schematic view showing a different viewing angle of a second buckle element in the turntable adjustment buckle according to the second embodiment of the present disclosure.

FIG. 18 is a schematic cross-sectional view of the turntable adjustment buckle according to the second embodiment of the present disclosure.

FIG. 19 is a top view of claws and positioning grooves in the turntable adjustment buckle according to the second embodiment of the present disclosure.

DETAILED DESCRIPTION

Referring to FIG. 1 and FIG. 2, a turntable adjustment buckle 100 according to a first embodiment of the present disclosure includes a first buckle element 1 and a second buckle element 2, wherein the first buckle element 1 and the second buckle element 2 can be assembled with each other, and the second buckle element 2 can rotate relative to the first buckle element 1.

Please refer to FIG. 3 and FIG. 4 together. The first buckle element 1 includes a base 11, an annular wall 12, a first matching portion 13, an accommodating space 14, two limiting portions 15 and two first through holes 16.

The base 11 is roughly in the shape of a disk and is used to fix or sew to an article. The article may be, for example, a clothing fabric, a cuff, a coat hood, leather goods, a plastic shell, a protective gear, a backpack, a bag, a helmet, a raincoat, or a footwear and the like, and the base 11 may be slightly curved so as to be completely attached to an article, but the present disclosure is not limited to as such.

The annular wall 12 extends vertically outward from the base 11, and the cross section of the annular wall 12 is in the shape of a circular ring. The first matching portion 13 is disposed in the annular wall 12, and the accommodating space 14 is surrounded and defined by the annular wall 12 and the first matching portion 13. The first matching portion 13 has a connecting portion 131, two elastic portions 132 and two tooth portions 133. The connecting portion 131 is roughly H-shaped and is disposed in the annular wall 12, and can be roughly coplanar with the base 11 (as shown in FIG. 4). The elastic portions 132 are roughly in the shape of a square sheet, and connected to the connecting portion 131 opposite to each other. For example, one side of each elastic portion 132 is connected to the connecting portion 131, and the other three sides of each elastic portion 132 are not connected to the connecting portion 131. Thereby, the elastic portions 132 can generate an elastic force when deformed by a force. The tooth portions 133 are respectively disposed on the elastic portions 132 and face the accommodating space 14.

Please refer to FIG. 9, each tooth portion 133 has an inclined surface 1331 and a stopping surface 1332 adjacent to the inclined surface 1331. The inclined surface 1331 and the stopping surface 1332 are respectively obliquely intersected with a surface 1321 of each elastic portion 132, and the area of the inclined surface 1331 is larger than the area of the stopping surface 1332. Accordingly, the cross section of each tooth portion 133 is roughly triangular, and an inclination angle of the inclined surface 1331 relative to the surface 1321 of each elastic portion 132 is smaller than an inclination angle of the stopping surface 1332 relative to the surface 1321 of each elastic portion 132.

The two limiting portions 15 are roughly arc-shaped blocks. The two limiting portions 15 extend outward from the inner side of the annular wall 12, correspond to each other, face the accommodating space 14, and are spaced apart from the first matching portion 13. The two first through holes 16 are formed through the annular wall 12 and correspond to each other.

Please refer to FIG. 5 and FIG. 6 together. The second buckle element 2 includes an operating portion 21, a column 22, a second matching portion 23 and a second through hole 24.

The operating portion 21 is roughly in the shape of a disk. The edge of the operating portion 21 has a plurality of recessed grooves, which can provide friction when a user holds the operating portion 21 to rotate, pull up, or press down. The operating portion 21 is correspondingly disposed at the top of the annular wall 12. The column 22 is roughly cylindrical, extends outward from the operating portion 21 and is located in the accommodating space 14. The second matching portion 23 is disposed at the end of the column 22 and located in the accommodating space 14, and is assembled with the first matching portion 13.

The second matching portion 23 has a turntable body 231 and a plurality of positioning grooves 232. The turntable body 231 is roughly in the shape of a disk. The plurality of positioning grooves 232 are respectively formed by recessing from a surface of the turntable body 231 and are spaced apart from each other, and the tooth portions 133 are accommodated therein. In one embodiment, the number of the positioning grooves 232 is 8, and the positioning grooves 232 are arranged in a ring or radial shape at intervals from each other, but the present disclosure is not limited to as such. Please refer to FIG. 9, each positioning groove 232 has a pushing surface 2321 and a limiting surface 2322 opposite to the pushing surface 2321. The pushing surface 2321 and the limiting surface 2322 are respectively obliquely intersected with a bottom surface 2323 of the positioning groove 232, so that the cross section of the positioning groove 232 is roughly an isosceles trapezoid, and an inclination angle of the limiting surface 2322 relative to the bottom surface 2323 of each positioning groove 232 is substantially equal to an inclination angle of the stopping surface 1332 relative to the bottom surface 2323 of each positioning groove 232. The second through hole 24 is formed through the column 22, and the through direction thereof is parallel to the radial direction of the column 22.

Please refer to FIG. 7, FIG. 8 and FIG. 9. When the first buckle element 1 and the second buckle element 2 are assembled with each other, the second matching portion 23 is pushed into the accommodating space 14 in the annular wall 12. At this time, the periphery of the turntable body 231 and the top surface of the limiting portion 15 can have corresponding inclined surfaces respectively, so that the second matching portion 23 can slightly squeeze the limiting portion 15 and slide into between the limiting portion 15 and the first matching portion 13, and the two tooth portions 133 are respectively completely accommodated in two of the plurality of positioning grooves 232. At this time, the inclined surface 1331 corresponds to the pushing surface 2321, and the stopping surface 1332 corresponds to the limiting surface 2322 and is engaged with the limiting surface 2322. Since the distance between the limiting portion 15 and the first matching portion 13 is approximately equal to the thickness of the second matching portion 23 of the second buckle element 2, the second matching portion 23 is limited by the limiting portion 15 so that the second buckle element 2 cannot be easily separated from the first buckle element 1.

When the two first through holes 16 and the second through hole 24 are connected, a rope 3 can be inserted into the first through holes 16 and the second through hole 24. At this time, the rope 3 is not wound around the column 22 and can move relative to the first buckle element 1 and the second buckle element 2. When the rope 3 is to be wound around the column 22, the second buckle element 2 can be operated to rotate relative to the first buckle element 1 along a fastening direction R1 (as shown in FIG. 3). In the fastening direction R1, since the area of the inclined surface 1331 is larger than the area of the stopping surface 1332, the pushing surface 2321 does not engage with the inclined surface 1331. Therefore, the user can apply a little force to make the pushing surface 2321 slide on the inclined surface 1331, and make the pushing surface 2321 and the inclined surface 1331 offset from each other. The elastic portion 132 is pressed downward and deformed until the pushing surface 2321 slides into the next adjacent positioning groove 232, and then the elastic portion 132 rebounds. At this time, the rope 3 can be wound around the column 22. When the rope 3 is to be released from the column 22, the second buckle element 2 can be operated to rotate relative to the first buckle element 1 along a releasing direction R2 (as shown in FIG. 3). In the releasing direction R2, since the stopping surface 1332 engages the limiting surface 2322, the user must overcome the resistance generated between the stopping surface 1332 and the limiting surface 2322 engaged with the stopping surface 1332. Therefore, a greater force than that in the fastening direction R1 must be applied to allow the stopping surface 1332 and the limiting surface 2322 to be offset from each other. The elastic portion 132 is pressed downward and deformed until the stopping surface 1332 slides into the next adjacent positioning groove 232, and then the elastic portion 132 rebounds. At this time, the rope 3 can be loosened from the column 22.

In other words, the engagement strength between the first matching portion 13 and the second matching portion 23 is different according to the fastening direction R1 and the releasing direction R2. When the second buckle element 2 rotates relative to the first buckle element 1 so that the rope 3 is wound around the column 22 along the fastening direction R1, the pushing surface 2321 does not engage with the inclined surface 1331. This will reduce the engagement strength between the first matching portion 13 and the second matching portion 23, allowing the user to feel that the fastening force of the rope 3 is lighter and easier to tighten, thereby avoiding the feeling of gradually becoming heavier due to the increase in the tension of the rope 3. When the second buckle element 2 rotates relative to the first buckle element 1 to release the rope 3 from the column 22 along the releasing direction R2, the stopping surface 1332 engages with the limiting surface 2322. This will increase the engagement strength between the first matching portion 13 and the second matching portion 23, so that the user feels that the loosening force of the rope 3 is heavier, thereby increasing the holding force of the rope 3. That is, the engagement strength in the fastening direction is smaller than the engagement strength in the releasing direction. Therefore, the engagement strength between the first matching portion 13 and the second matching portion 23 can provide different operating feelings to the user.

In one embodiment, the first buckle element 1 and the second buckle element 2 are made of nylon, wherein the first buckle element 1 is integrally formed, and the second buckle element 2 is integrally formed, but the present disclosure is not limited to as such.

In one embodiment, as shown in FIG. 10 and FIG. 11, the base 11 may be made of nylon, and the annular wall 12, the limiting portions 15 and the first matching portion 13 may be made of polyoxymethylene and are integrally formed. At this time, the base 11 has mounting openings 111, and the annular wall 12 has protrusions 121. The protrusions 121 can be snapped into the mounting openings 111 to connect the base 11 to the annular wall 12. The purpose of using polyoxymethylene is to prevent the problem of dimensional change after contact with water.

In another embodiment, as shown in FIG. 12 and FIG. 13, the base 11, the annular wall 12 and the limiting portions 15 are made of nylon and are integrally formed, and the first matching portion 13 is made of polyoxymethylene. At this time, the elastic portions 132 are connected to the connecting portion 131 to form a cross shape. The connecting portion 131 is locked in mounting openings 122 of the annular wall 12, so that the first matching portion 13 can be fixedly mounted in the annular wall 12.

In summary, the turntable adjustment buckle of the present disclosure is designed with elastic portions, tooth portions, and positioning grooves. The elastic portions are deformed by a force and generate resistance to rotation. Furthermore, the engagement strengths of the tooth portions and the positioning grooves in different rotation directions are different, which can provide users with different operating feelings to intuitively identify the direction of tightening or loosening the rope. In addition, the turntable adjustment buckle of the present disclosure has a low number of components, low manufacturing cost, and a wide range of applications.

Referring to FIG. 14 and FIG. 15, a turntable adjustment buckle 200 according to a second embodiment of the present disclosure includes a first buckle element 4 and a second buckle element 5, wherein the first buckle element 4 and the second buckle element 5 can be assembled with each other, and the second buckle element 5 can rotate relative to the first buckle element 4.

Please also refer to FIG. 16, the first buckle element 4 includes a base 41, an annular wall 42, a first matching portion 43, an accommodating space 44, a first limiting portion 45 and two first through holes 46.

The base 41 is roughly in the shape of a rectangular disk and has a shaft hole 411. The base 41 is used to fix or sew to an article. The article may be, for example, a clothing fabric, a cuff, a coat hood, leather goods, a plastic shell, a protective gear, a backpack, a bag, a helmet, a raincoat, or a footwear and the like, but the present disclosure is not limited to as such.

The annular wall 42 extends vertically outward from the base 41, and the cross section of the annular wall 42 is annular. The shaft hole 411 is approximately located at the center of the annular wall 42. The accommodating space 44 is surrounded and defined by the base 41 and the annular wall 42. The first matching portion 43 is disposed around the annular wall 42 and has a plurality of positioning grooves 431. Each positioning groove 431 has a pushing surface 4311 and a limiting surface 4312 adjacent to each other. The pushing surface 4311 and the limiting surface 4312 both face the accommodating space 44. The area of the pushing surface 4311 is larger than the area of the limiting surface 4312, so that the space surrounded by the pushing surface 4311 and the limiting surface 4312 can roughly have a triangular cross section. Furthermore, an inclination angle of the pushing surface 4311 relative to an inner surface 421 of the annular wall 42 is smaller than an inclination angle of the limiting surface 4312 relative to the inner surface 421 of the annular wall 42. The first limiting portion 45 is roughly an annular block and extends outward from the top edge of the annular wall 42. The two first through holes 46 are formed through the annular wall 42 and correspond to each other.

In one embodiment, the number of the positioning grooves 431 is 12. Moreover, the positioning grooves 431 are annularly disposed on the inner side of the annular wall 42 in a manner that the pushing surface 4311 is adjacent to the next adjacent limiting surface 4312, but the present disclosure is not limited to as such.

Please also refer to FIG. 17, the second buckle element 5 includes an operating portion 51, a column 52, a second matching portion 53, a second limiting portion 54, a second through hole 55 and an assembly pillar 56.

The operating portion 51 is roughly in the shape of a recessed disk, and the outer edge of the operating portion 51 has a plurality of concave grooves, which can provide friction when the user holds the operating portion 51 to rotate it. The assembly pillar 56 is disposed at the center of the operating portion 51, and the second limiting portion 54 is disposed at the inner edge of the operating portion 51 and extends inwardly. When the operating portion 51 is disposed corresponding to the top edge of the annular wall 42, the second limiting portion 54 can be snapped into the first limiting portion 45. The column 52 is roughly cylindrical, and two ends of the column 52 have a shaft portion 521 and an assembly hole 522 respectively. The assembly hole 522 and the assembly pillar 56 have square cross-sections and can be assembled with each other, so that the column 52 is erected on the operating portion 51 and can move together with the operating portion 51. The shaft portion 521 is accommodated in the shaft hole 411, so that the second buckle element 5 can rotate relative to the first buckle element 4 around the shaft portion 521 as an axis.

The second matching portion 53 is annularly arranged on the side of the column 52 and matches with the first matching portion 43. The second matching portion 53 has three claws 530 received in the positioning grooves 431. Each claw 530 has a base end 531, a bending body 532 and a buckle body 533. The base end 531 is formed to extend outward from the column 52 (e.g., along the radial direction of the column 52). The bending body 532 is bent to connect the base end 531 and is spaced apart from the column 52, and each bending body 532 extends in the same rotation direction (counterclockwise in FIG. 15 and clockwise in FIG. 17), that is, bends along the circumferential direction of the column 52. The buckle body 533 is disposed at the end of the bending body 532 and faces the positioning grooves 431. Each buckle body 533 has a roughly triangular cross section and has an inclined surface 5331 and a stopping surface 5332 adjacent to each other. The area of the inclined surface 5331 is larger than the area of the stopping surface 5332, so that an inclination angle of the inclined surface 5331 relative to the bending body 532 is smaller than an inclination angle of the stopping surface 5332 relative to the bending body 532. The second through hole 55 is formed through the column 52, and the through direction thereof is parallel to the radial direction of the column 52.

Referring to FIG. 18 and FIG. 19 (FIG. 19 is a top view after omitting the drawing of the operating portion 51 and disposing the second matching portion 53 in the base 41), when the first buckle element 4 and the second buckle element 5 are assembled with each other, the shaft portion 521 is accommodated in the shaft hole 411, the assembly pillar 56 is assembled in the assembly hole 522, the first limiting portion 45 and the second limiting portion 54 are locked with each other, the first matching portion 43 and the second matching portion 53 are matched with each other, and the buckle body 533 is received in the positioning grooves 431, so that the pushing surface 4311 is correspondingly engaged with the inclined surface 5331, and the limiting surface 4312 is correspondingly engaged with the stopping surface 5332.

When the two first through holes 46 and the second through hole 55 are connected, a rope 3 can be inserted into the first through holes 46 and the second through hole 55. At this time, the rope 3 is not wound around the column 52 and can move relative to the first buckle element 4 and the second buckle element 5. When the rope 3 is to be wound around the column 52, the second buckle element 5 can be operated to rotate relative to the first buckle element 4 along the fastening direction R1 (as shown in FIG. 19). In the fastening direction R1, the area of the inclined surface 5331 is larger than the area of the stopping surface 5332, and the area of the pushing surface 4311 is larger than the area of the limiting surface 4312. That is, an inclination angle of the inclined surface 5331 relative to the bending body 532 is smaller than an inclination angle of the stopping surface 5332 relative to the bending body 532, and an inclination angle of the pushing surface 4311 relative to the inner surface 421 of the annular wall 42 is smaller than an inclination angle of the limiting surface 4312 relative to the inner surface 421 of the annular wall 42. Therefore, the user can apply a little force to make the pushing surface 4311 slide on the inclined surface 5331 and be offset with the inclined surface 5331. The stopping surface 5332 is away from the limiting surface 4312, and the bending body 532 is deformed by force and elastically compressed toward the column 52, and the bending body 532 does not rebound until the buckle body 533 slides into the next adjacent positioning groove 431 via the inclined surface 5331 and the pushing surface 4311. At this time, the rope 3 can be wound around the column 52. When the rope 3 is to be released from the column 52, the second buckle element 5 can be operated to rotate relative to the first buckle element 4 along the releasing direction R2 (as shown in FIG. 19). In the releasing direction R2, an inclination angle of the stopping surface 5332 relative to the bending body 532 is greater than an inclination angle of the inclined surface 5331 relative to the bending body 532, and an inclination angle of the limiting surface 4312 relative to the inner surface 421 of the annular wall 42 is greater than an inclination angle of the pushing surface 4311 relative to the inner surface 421 of the annular wall 42. Moreover, the stopping surface 5332 engages with the limiting surface 4312, and the user must overcome the resistance generated between the stopping surface 5332 and the limiting surface 4312 engaged with the stopping surface 5332. Therefore, a greater force than that in the fastening direction R1 must be applied to allow the limiting surface 4312 to slide on the stopping surface 5332 and be offset with the stopping surface 5332. The bending body 532 is deformed by a force and elastically compressed toward the column 52, and the bending body 532 does not rebound until the buckle body 533 slides into the next adjacent positioning groove 431 via the limiting surface 4312 and the stopping surface 5332. At this time, the rope 3 can be loosened from the column 52.

In other words, the engagement strength between the first matching portion 43 and the second matching portion 53 is different according to the fastening direction R1 and the releasing direction R2. When the second buckle element 5 rotates relative to the first buckle element 4 to allow the rope 3 to wrap around the column 52 along the fastening direction R1, each bending body 532 extends outward from the base end 531 in a direction opposite to the fastening direction R1. An inclination angle of the inclined surface 5331 relative to the bending body 532 is smaller than an inclination angle of the stopping surface 5332 relative to the bending body 532, and an inclination angle of the pushing surface 4311 relative to the inner surface 421 of the annular wall 42 is smaller than an inclination angle of the limiting surface 4312 relative to the inner surface 421 of the annular wall 42. This will reduce the engagement strength between the first matching portion 43 and the second matching portion 53, and allow the user to feel that the tightening force of the rope 3 is lighter and easier to tighten, thereby avoiding the operating feeling becoming heavier as the tension of the rope 3 increases. When the second buckle element 5 rotates relative to the first buckle element 4 to release the rope 3 from the column 52 along the releasing direction R2, each bending body 532 extends outward from the base end 531 in the same direction as the releasing direction R2. An inclination angle of the stopping surface 5332 relative to the bending body 532 is greater than an inclination angle of the inclined surface 5331 relative to the bending body 532, and an inclination angle of the limiting surface 4312 relative to the inner surface 421 of the annular wall 42 is greater than an inclination angle of the pushing surface 4311 relative to the inner surface 421 of the annular wall 42. This will increase the engagement strength between the first matching portion 43 and the second matching portion 53, allow the user to feel a heavier loosening force on the rope 3, thereby increasing the holding force of the rope 3. That is, the engagement strength in the fastening direction R1 is smaller than the engagement strength in the releasing direction R2. Therefore, the engagement strength between the first matching portion 43 and the second matching portion 53 can provide different operating feelings to the user.

In one embodiment, the operating portion 51 is made of nylon, the first buckle element 4 is made of nylon, and the second matching portion 53 and the column 52 are made of polyoxymethylene, but the present disclosure is not limited to as such.

In summary, the turntable adjustment buckle of the present disclosure is designed with claws and positioning grooves. Each claw is deformed by a force and generates resistance against rotation, and the engagement strengths of the claws and the positioning grooves are different in different rotation directions, which can provide users with different operating feelings to intuitively identify the direction of fastening or loosening the rope. In addition, the turntable adjustment buckle of the present disclosure has a low number of components, low manufacturing cost, and a wide range of applications.